RF System and Circuit Challenges for WiMAXRF System and Circuit Challenges for WiMAX Balvinder Bisla, Intel Communications Group, Intel Corporation Roger Eline, Intel Communications Group, Intel Corporation Luiz M. Franca-Neto, Intel Communications Group, Intel Corporation Index words: WiMAX, I/Q, IF, FDD, TDD ABSTRACT Broadband Wireless Access has occupied a niche in the market for about a decade, but with the signing of the 802.16d standard it could finally explode into the mass market. Intel’s baseband transceiver chip is flexible enough to accommodate Radio Frequency Integrated Circuit (RFIC) architectures of today and the future. With the emergence of this standard an ecosystem is developing that will allow multiple vendors to produce components that adhere to a standard specification and hence allow large-scale deployment. O……